Film-clip



G. M. DYE.

FILM CLIP.

APPLICATION FILED SEPT- 6. 1919.

Patented Apr. 5, 1921.

UNITED STATES GLEN M. DYE, OF MINNEAPOLIS, MINNESOTA.

FILM-CLIP.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed September 6, 1919. Serial No. 322,079.

To all whom it may concern:

Be it known that I, GLEN M. DYE, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in Film-Clips; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide an improved clip forholdingphotographic films, and the like; and to such ends, generally stated,the invention consists of the, novel devices and combinations of deviceshereinafter described and defined in the claims. 1 I

As is a well known fact, film clips, in accordance with generalpractice, have been applied to the upper ends of film strips to supportthem from a suitable overhead cord, bar, or the like, and have beenapplied to the lower ends of such films as act as weights for holdingthe films suspendedin stralght vertical position. As the chemicals ofthe developing and fixing liquids act slowly to eat away the metal ofthe clip, it is important that the said clip be so constructed that itwill have good drainage when applied either end up, or, otherwisestated, there must be no pockets that will hold the liquid when the filmis removed from the bath and is hung up to dry with the clips applied.

Also, in clips hitherto provided for this purpose, there has been nocertainty that the barbs of the holding jaws would roperly penetrate andhold the film. oreover, a common defect in film clips hereto foredesigned,, has been foundin the fact that the emulsion covered faces ofthe film would be pressed against an extended-fiat surface of the clipand would adhere thereto, so that a considerable portion of emul sionwould be 'removed when the clips were taken from the negatives after thenegatives have been dried.

My invention provides a film clip that will certainly puncture andpositively hold the film, which will be quickly drained' when removedfrom the liquid and which will not tear the emulsion from the driednegative when the clip is removed from the negative. 1

he improved clip, in its preferred form,

is illustrated in the accompanying drawlngs wherein like charactersindicate like parts throughout the several views.

Referring to the drawings:

Figure 1 shows the clip applied to a film, looking at the clip from whatmay be treated as its front side;

Fig. 2 is an elevation of the clip looking at the same from what may betreated as the rear side;

Fig. 3 is a section taken the line 3-3 of Fig. 1;

Fig. 4 is a section taken approximately on the line 4-4 of Fig. 1, butillustrating the manner in which the clip is applied to the film;

Fig. 5 is a view corresponding to Fig. 4:, but showing a slightlydifferent step in the application of the clip to the film; and.

F ig. 6 shows the clip completely applied to the film.

An ordinary photographic film is indicated in the drawings by thecharacter 3 The clip is preferably made from spring sheet brass, but maybe made of any suitable metal. In its best form, it is made in twosections-7 and 8, the said section 7 being bent into U-shaped form andprovided at one end with a laterally bent neck 9 that is extended toform a head 10, which, at its edge, isformed with a toothed fiange,whichlatter afi'ords an alined series of sharp pointed V-shaped teeth or bars11. The clip section 8 comprises a fiat base flange that is rigidlysecured to the short prong or end of the U-shaped spring member 7; and,as shown, this connection is made by clenching ears 7 a and 8*,respectively, on said members 7 and 8, and. which ears 7 and 8 areclenched through'slots 7 and 8 in the members 7 and 8. The extendedportion of the plate or section 8 has full width laterapproximately onally bent portion 12 that is formed with a slot opening 13 through whichthe neck 9 of member 7 as passed and works freely. Beyond its neckportion 12, member 8 is extended full width to form a clamping Jaw orhead 14:; and this head 14 is formed with laterally pressed tubularbosses 15 that afford seats for the pointed ends of the barbs 11 ofmember 7. v

In assembling the two parts of the clip, the extendedbody portion ofmember 7 1s inserted endwise through slot 13 of member 8, and then thesaid members 7 and 8 are clenched together, as illustrated. In the barbsare forced through the film,

completed clip,

securely hold sion is not suflicient to cause the barbs to penetrate thefilm, the jaws or heads of the two members 7 and 8 may bepressed'together by an operation clearly indicated in Fig. 5. Fig atshows the manner in which I the clip may be handled to separate the jawsfor the application of the clip to the film, and Fig. 6 shows themannerin which the film is held by the clip. By reference particularly to thislatter view, Fig. 6, it will be seen that the film, not only will bepositively held by the barbs 11 and bosses 15, but that this isaccomplished with but very slightly extended contact with the emulsionof the film. The barbs, themselves, do not contact with any extendedportion of the emulsion and the offset edges of the tubular bosses 15engage the emulsion only on sharply defined lines that cover practicagyno considerable portion of the emulsion. o

fiat surface of any part of the clip is enga'ged with the emulsion ofthe film.

Films, as is well known, are covered with emulsion on both sides, sothat it is highly important that no flat'or extended portion of the clipbe engaged with either side of the film.

Obviously, the clip will be rapidly drained when removed from theliquid'or solution. When the clip is applied with its jaws uppermost,drainage will be afforded by the notch 13 of member 8, and when the clipis turned other end up, there will be free drainage downward through theplurality of openings afforded between the barbs 11. (See particularlyFig. 3.)

The clip described may be easily stamped in-two sections, substantiallyas described and illustrated, and these two sections may be quickly,cheaply, and efficiently put together and interlocked, so that the filmmay be made at very reasonably small cost.

Moreover, the clip is formed without anysmall neck portions, or thelike, that would of the solution.

What I claim is: 1. N film clip having cooperating jaws,

barbs are arranged to enter in the clip-holding action, whereby the filmwill be perforated and positively held by engagement therewith only inthe immediate vicinity of the points of perforation.

2. A film clip having cooperating jaws, the one jaw having pointed barbsand the other having laterally offset tubular bosses into the offsetsides of which bosses said barbs' are arranged to enter in theclipholding action, whereby the film will be perforated and'positivelyheld by engagement therewith only-in the immediate vicinity of thepoints of perforatiomthe body of said clip being in the form of a springtending to seat said barbs in .said bosses.

3. A film clip having cooperating jaws, the one jawhaving pointed barbsand the other having laterally offset tubular bosses into the offsetsides of which bosses said barbs are arranged to enter in theclipholding action, whereby the film will be perforated and positivelyheld by engagement therewith only in the immediate vicinity of thepoints of perforation, the body of said clip being in the form of aspring tending to seat said barbs in said bosses, and the end portionsof the jaws of said clip being crossed and passed, the one through theother.

4. In a film clip, the combination with a flat spring member bent intoU-shaped formation and formed at the end of the one prong with arelatively wide laterally offset head having a row of pointed barbs, ofa which the pointed barbs of the first mem her are adapted to enter.

- In testimony whereof I affix my signature in presence of twowitnesses.

GLEN M. DYE

Witnesses BERNIGE G. BAUMANN, HARRY D, KILGORE.

